Malicious PDF — malware analysis report

Static analysis result for SHA-256 2245eb9e17e887a2…

MALICIOUS

PDF

146.5 KB Created: 2021-05-30 00:32:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 79cf82210227c0101f6a7e7092edfdbb SHA-1: b0afaead1f5a8e44b4b22b4c53284f9b8e3a694a SHA-256: 2245eb9e17e887a2b5f2e498b4aa2f757f31167ecbd2c0443826ac50a5ec9a0f
66 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged as malicious by an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 4

  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://jottigo.ru/strik?utm_term=swtor+mercenary+bodyguard+guide+6.0 PDF link annotation
    • https://kamedewogivazu.weebly.com/uploads/1/3/4/0/134096977/627a0c191663.pdfIn PDF document text
    • https://simogewijak.weebly.com/uploads/1/3/4/6/134642120/dibapubus_benakexa_niniforena.pdfIn PDF document text
    • https://viwoxinuzozaxa.weebly.com/uploads/1/3/1/6/131636825/zomawuxoxalasafuvu.pdfIn PDF document text
    • https://pebabole.weebly.com/uploads/1/3/4/6/134698512/tolisiwovujo.pdfIn PDF document text
    • https://foramawebor.weebly.com/uploads/1/3/1/4/131410370/vureruko.pdfIn PDF document text
    • https://dojobojijiwum.weebly.com/uploads/1/3/2/6/132681334/91d429e8845.pdfIn PDF document text
    • https://static.s123-cdn-static-d.com/uploads/4479213/normal_60afeba963027.pdfIn PDF document text
    • https://fataleripe.weebly.com/uploads/1/3/0/9/130969718/4d18894e97.pdfIn PDF document text
    • https://govasosu.weebly.com/uploads/1/3/4/5/134519533/971c7848aace7.pdfIn PDF document text
    • https://getedizexagan.weebly.com/uploads/1/3/0/7/130740146/wogixidotiku.pdfIn PDF document text
    • https://lovokavupas.weebly.com/uploads/1/3/0/7/130776776/9066476.pdfIn PDF document text
    • https://daxejinuvu.weebly.com/uploads/1/3/4/6/134645798/6432231.pdfIn PDF document text
    • https://gubilipolijig.weebly.com/uploads/1/3/4/7/134707964/3491556.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387427/normal_60217959450b9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409420/normal_603924ae6c698.pdfIn PDF document text
    • https://jusodudefepad.weebly.com/uploads/1/3/4/6/134650432/fe672ac406.pdfIn PDF document text
    • https://moxuzoketo.weebly.com/uploads/1/3/1/1/131164531/4376794.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383912/normal_60029023305ba.pdfIn PDF document text
    • https://desaboros.weebly.com/uploads/1/3/5/4/135400021/nufonumifizamanebi.pdfIn PDF document text
    • https://xanifinutevafux.weebly.com/uploads/1/3/0/7/130739814/vugaj.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/de797e24-9651-4e0b-a88b-217b60a84814/of_ships_and_the_sea.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/15c03265-28fa-4ef1-bd84-706ad999b09b/instructions_for_completing_form_ds-11.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5c6c40fc-5cc2-43e9-be33-96d8ec4cc305/what_did_mary_rowlandsons_book_demonstrate_quizlet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/64928033-60cd-49df-8d93-f0085781bead/logica_de_programao_vetores_exercicios_resolvidos.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0002020e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2020E 5816 bytes
SHA-256: cf71a6a41ab3ba2dccaead6d052712f33af22552489fbda1cd970fb75128d0f5
font_01_sfnt_off000215e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x215E2 11284 bytes
SHA-256: 99d8adb83f55b7d5d9b2cd0e65ce34ef422a5e8c9a6183eb26ed1cdad83c0084

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